Hello,
after a few hours of printing the targeted temperature E0 drops from 200°C to 0 AND the bed temperature drops to 0 too (with an error message). After 30 hours of printing my print failed and I couldn't resume the printing again. My fans are working fine. What could be the cause?
UPDATE: New power supply arrived. I installed it (+ new silent fan, the original is very very loud) and i started a new print. 30 min printing and looks fine. Will update again the next day!
UPDATE 2: I think the new power supply did the trick. After a 33 hours print everything was printed fine without interruptions of any kind (like hotend or heat bed temp drop). I guess there was either some high peak voltages sometimes that killed my original power supply. Now I'm using a multi socket with an inbuild overvoltage protection.